Cannot install iOS 18 Simulator in Xcode 16 on Sonoma 14.6.1

Question

Created Oct ’24

Replies 3

Boosts 0

Participants 3

Attempting to upgrade to Xcode 16 from 15.3. My team is installing the application from the Apple Developer website, and we are able to successfully install the application and run it. The issue occurs when attempting to install the iOS 18 simulator.

We continue to get the same error when attempting to install the simulator via:

Xcode

CLI using the xcodebuild -downloadPlatform iOS command

Downloading the dmg file from the Apple Developer website and running xcrun simctl runtime add iOS_18_Simulator_Runtime.dmg

The error we continue to get is the following:

Downloading iOS 18.0 Simulator (22A3351): Error: Error Domain=DVTDownloadableErrorDomain Code=29 "Registering simulator runtime with CoreSimulator failed." UserInfo={NSLocalizedDescription=Registering simulator runtime with CoreSimulator failed., NSUnderlyingError=0x600002c70930 {Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)}}}

We have attempted reinstalling Xcode multiple times, including cleaning out the Developer directory. We made sure there is over 50GB of space available on the disk, to validate it isn't a space issue.

We're currently on macOS Sonoma 14.6.1, which looks like it should be compatible, and might look at updating to macOS 15 to see if that corrects the issue.

Answered by matt-c in 809060022

It ended up being a policy that was causing our problem with installing the simulator. Once the policy that was restricting connections to disk images and external disks was removed, we were able to install the simulator.

Hopefully this saves others some time.

Boost

Answer 1

bhagwat.karankar@scrumstart.ne OP

Oct ’24

I Have Mac Os 15.0 still have same problem

0

Answer 2

krames OP

Oct ’24

Same problem here. Threads on other sites suggest it's a drive space issue but I have over 200gb free. This is very frustrating. Same result with other versions of iOS. Next I am going to try to download an Xcode beta version to see if it works.

0

Answer 3

matt-c OP

Oct ’24

Accepted Answer

It ended up being a policy that was causing our problem with installing the simulator. Once the policy that was restricting connections to disk images and external disks was removed, we were able to install the simulator.

Hopefully this saves others some time.

0